public override void ViewWillAppear(bool animated)
{
base.ViewWillAppear(animated);
if (_timer == null)
{
_timer = NSTimer.CreateRepeatingScheduledTimer(0.01, (timer) =>
{
_i++;
_lineDataSeries.Append(_i, Math.Sin(_i * 0.1 + _phase));
_scatterDataSeries.Append(_i, Math.Cos(_i * 0.1 + _phase));
_phase += 0.01;
var customAnnotation = new SCICustomAnnotation();
if (_i % 100 == 0)
{
customAnnotation.CustomView = new UILabel(new CoreGraphics.CGRect(0, 0, 10, 10))
{
Text = "Y", BackgroundColor = UIColor.LightGray
};
customAnnotation.X1Value = _i;
customAnnotation.Y1Value = 0.5;
customAnnotation.CoordinateMode = SCIAnnotationCoordinateMode.Absolute;
customAnnotation.YAxisId = "firstYAxis";
// adding new custom annotation into the annotationGroup property
_annotationCollection.Add(customAnnotation);
// removing annotations that are out of visible range
var customAn = _annotationCollection[0] as SCICustomAnnotation;
if (customAn != null)
{
if (customAn.X1Value.CompareTo(_i - 500) == 0)
{
// since the contentView is UIView element - we have to call removeFromSuperView method to remove it from screen
customAn.CustomView.RemoveFromSuperview();
_annotationCollection.Remove(customAn);
}
}
}
if (_i % 200 == 0)
{
customAnnotation.YAxisId = "secondaryYAxis";
}
_surfaceTop.ZoomExtentsX();
// Extents bottom chart
_surfaceBottom.ZoomExtentsX();
});
}
}
